Check with the local Fire Authority to verify if they will accept our certification tags. Wall brackets and adhesive fire extinguisher arrow signs. Buckeye's 5 LB Monoammonium Phosphate-based fire extinguisher is designed for use in combating Class A, B, and C type fires. Commonly known as an "ABC" fire Commonly known as an "ABC" fire extinguisher, this multipurpose extinguisher is designed for use in homes, office buildings, warehouses, motor vehicles, farms, and woodworking areas.